<template>
  <div class="todo-footer" v-show="total">
    <label>
<!--      <input type="checkbox" :checked="isAll" @click="checkAll"/>-->
      <input type="checkbox" v-model="isAll"/>
    </label>
    <span>
          <span>已完成 {{doneTotal}}</span> / 全部 {{total}}
        </span>
    <button class="btn btn-danger" @click="clearAll">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  name: "TodosFooter",
  props: ['todos'],
  data() {
    return {

    }
  },
  computed: {
    doneTotal() {
      const x = this.todos.reduce((pre, current) => {
        console.log('1@', pre)
        console.log('2@', current)
        return pre + (current.done ? 1 : 0);
      }, 0)
      return x;
    },
    total() {
      return this.todos.length;
    },
    isAll: {
      get() {
        return this.doneTotal === this.todos.length;
      },
      set(value) {
        console.log('set @', value);
        // this.checkAllTodo(value)
        this.$emit('checkAllTodo', value)
      }
    }
  },
  methods: {
    // checkAll(e) {
    //   this.checkAllTodo(e.target.checked)
    // }
    clearAll() {
      // this.clearAllDone();
      this.$emit('clearAllDone')
    }
  }
}
</script>

<style>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>